C8051F020-TB Silicon Laboratories Inc, C8051F020-TB Datasheet - Page 136

• Manufacturer Part Number: C8051F020-TB
• Description: BOARD PROTOTYPING W/C8051F020
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F020-TB

• Contents: Board
• Processor To Be Evaluated: C8051F02x
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F020
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

C8051F020/1/2/3
136
VDD = 2.7V to 3.6V; T
Internal Oscillator Frequency
Bit7:
Bits6-5:
Bit4:
Bit3:
Bit2:
Bits1-0:
Internal Oscillator Current
Consumption (from VDD)
MSCLKE
R/W
Bit7
PARAMETER
MSCLKE: Missing Clock Enable Bit
0: Missing Clock Detector Disabled
1: Missing Clock Detector Enabled; reset triggered if clock is missing for more than 100 µs
UNUSED. Read = 00b, Write = don't care
IFRDY: Internal Oscillator Frequency Ready Flag
0: Internal Oscillator Frequency not running at speed specified by the IFCN bits.
1: Internal Oscillator Frequency running at speed specified by the IFCN bits.
CLKSL: System Clock Source Select Bit
0: Uses Internal Oscillator as System Clock.
1: Uses External Oscillator as System Clock.
IOSCEN: Internal Oscillator Enable Bit
0: Internal Oscillator Disabled
1: Internal Oscillator Enabled
IFCN1-0: Internal Oscillator Frequency Control Bits
00: Internal Oscillator typical frequency is 2 MHz.
01: Internal Oscillator typical frequency is 4 MHz.
10: Internal Oscillator typical frequency is 8 MHz.
11: Internal Oscillator typical frequency is 16 MHz.
R/W
Table 14.1. Internal Oscillator Electrical Characteristics
Bit6
-
Figure 14.2. OSCICN: Internal Oscillator Control Register
a
= -40°C to +85°C
R/W
Bit5
-
OSCICN.[1:0] = 00
OSCICN.[1:0] = 01
OSCICN.[1:0] = 10
OSCICN.[1:0] = 11
IFRDY
CONDITIONS
OSCICN.2 = 1
R/W
Bit4
Rev. 1.4
CLKSL
R/W
Bit3
IOSCEN
R/W
Bit2
MIN
12.3
1.5
3.1
6.2
IFCN1
TYP
200
R/W
Bit1
16
2
4
8
MAX
19.2
2.4
4.8
9.6
IFCN0
R/W
Bit0
UNITS
MHz
µA
SFR Address:
00010100
Reset Value
0xB2